--- /dev/null
+/*
+ * Copyright (c) 2018. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.service.jpa;
+
+import javax.persistence.EntityManager;
+
+import org.hedgecode.chess.domain.DomainObject;
+import org.hedgecode.chess.persistence.PersistenceManager;
+import org.hedgecode.chess.service.DomainService;
+import org.hedgecode.chess.service.ServiceRegistry;
+
+/**
+ *
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public abstract class JpaDomainService<DomainType extends DomainObject> implements DomainService<DomainType> {
+
+ JpaDomainService() {
+ }
+
+ EntityManager getEntityManager() {
+ PersistenceManager persistenceManager = ServiceRegistry.singleProvider(
+ PersistenceManager.class
+ );
+ return persistenceManager.getEntityManager();
+ }
+
+ @Override
+ public DomainType create(DomainType domainObject) {
+ getEntityManager().persist(
+ domainObject
+ );
+ return domainObject;
+ }
+
+ @Override
+ public DomainType update(DomainType domainObject) {
+ getEntityManager().persist(
+ domainObject
+ );
+ return domainObject;
+ }
+
+ @Override
+ public void remove(DomainType domainObject) {
+ getEntityManager().remove(
+ domainObject
+ );
+ }
+
+}